In this video, take a look at the methods available for protecting subnets.
- [Instructor] A network access control list is defined as … a stateless subnet firewall. … It's optional control. … Where we define inbound and outbound rules. … We separate the allow and deny rules … and the rules are processed in order. … There is a default NACL which allows traffic … to flow inbound and outbound unimpeded. … It doesn't do anything. … So if you want to have control at the subnet level, … you have to enable your own custom network ACLs. … The rules for your network ACL could be defined as … inbound and outbound rules … for the inbound rule, allow or deny … for a specific traffic pattern. … The outbound rule, also allow or deny, … for a specified traffic pattern. … Each subnet needs to be associated with a network ACL. … And there is a default network ACL … that's defined by default. … But as we've discussed, … it doesn't really protect anything. … It's really just a placeholder. … If we look at an example of inbound outbound rules, … we can see specific rules such as 120 and 130 …
Skill Level Intermediate
1. Infrastructure Security
2. Data Protection
3. Detective Controls
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